Valve



July 17, 1923.`

L. F. O'FLAHERTY ET AL VALVE Filed March A Q 0 y m fw/.M1 o mer H W?IWL. .w

Patente-d duly l?, 1923.

rr arras l iatale ,P ATENT "orsi-CLE.

Lno r. OFLAHERTY AND wintinivr L. irIRKPATRICK, or atom, iIiLINoIs.

VALVE.

Application filed March 31, 1922. kSerial No. 548,338.

To all whom t may concern: i

Be it'known that we, Lito F. OFLAHERT-Y and VILLIAM L.' Krenn-maren,`citizens ,of the United States,.andresidents of the city rof Elgin,ccimty of Kane, and State of Illinois, have invented certain new andvuseful Improvements in Valves, vot whichthe followingl is aspecification. r

This invention relates to valves, and .more particularly to mixingvalves for rhot and cold water or other ziiuids, and has for its objectthe provision of a device ofthis character. which in addition lto meanstor mixing fluids, is arranged to have independent means toautomatically sealfthe mixing valve when in inoperative position toprevent leakage therefrom.

Other objects will appear hereinafter.

The invention consists in the combinations and arrangements of partshereinafter described and claimed. y

The invention will be best understood by reference to the accompanyingdrawings Jorming a part of this specification, and in which, y f

Fig. 1 is a vertical sectional view of the invention,

Fig. 2 is a view partly in section on line 2 2 of Fig. 1, and

Fig. 3 is a top plan view of the mixing valve proper. p

The invention consists of a suitable casing 10, preferably having inletducts 11 and 12 and an outlet duct 13. The casing 10 is providedsubstantially intermediate its ends with shoulders 14, upon which may beplaced a suitable gasket 15, to form a seat for a partition 16, suchpartition defining a mixing chamber 17 and a -discharge chamber 18, suchchambers being connected by an aperture 19 in the partition 16, whichaperture is preferably surrounded by a rib 16. above describedconstruction is substantially similar to that shown and claimed in mycompanion application led on even date herewith.

Mounted in the chamber 17 is a .mixing valve 20, which is particularlydescribed in my companion application,` Ser. No. 548333, filed March 31,1922. Such valve preferably consists of'ka disc provided with an annularrecess 21, which communicates with the inlet ducts 11 and 12 by means ofports 22 and 23 formed in said valve, such ducts being oset with respectto each other so that during a complete operative stroke of The thevalve 20, the port 22 isfirst put into communication with the `recess21, further movementof said valve permitting communication between bothof the ducts 11 and 12, still further movement of said valve closing theport 12 and opening the port 11 to lits fullest extent. The valve 2O isalso provided with apertures 21 communicating with the recess`21, .andthe bottom of the chamber 17 is provided `with pins 17 adapted toproject into the apertures -21 so'as to prevent rotation of the valve in-`the `chamber 17.

.Mounted in thedischarge chamber` 18,1and

adapted/,to rest ony thefpartition 16 isan inrverted cup-shaped member`24 which mernv -ber is kheld in position .by means of a cap 25 threadedonto they casing 10as shown. lSuch 1 cup-shaped member is providedwithan inwardly projecting hollow boss 26 which forms a ,bearing for theystem 27. which has its inner end `connected yby kany suitable meanstothe valve 2.0. y 'f I An important feature of the invention lies .inproviding the valve 320 withja washer f or packing ring 28, which isadapted in the innermost position of the valve 20 to abut against therib 16, and close the aperture in the partition 16 so as to cut olf theflow of water to the discharge chamber18.

The valve 2() is normally hel-d in inoperative, position by means of aspring 29 mounted in the socket 30 in the boss 26, the outer end of thespring 29 abutting against the knob 31 on the ystem 27. A gland 32 isprovided in the inner end of the boss 26 and surrounds the stem 27 inorder to insure a watertight connection during the sliding movements ofsaid stem.

In operation it will be seen that bypressingthe stem 27, the ports 22and 23 are selectively engaged with the inlets 11 and`12.y

As soon as pressure is removed from the stem 27 the valve returns to itsseat, which in addition to closing the ports 22 and l23, also closes theaperture 19 in the partition 16, and the spring 29`holds the packingring 28 of the valve 2O tightly against the rib 16', thereby sealing thevalve and efectually preventing leakage of water past the valve andthrough the aperture 19.

While we have illustrated and described the preferred form ofconstruction for carrying our invention into effect, this is capable ofvariation andv modification without departing from the spirit of theinvention.

We, therefore; do not wish tobe limited to the precise details ofconstruction set "forth,

but desire to avail ourselves of such varia-.

tions and modifications as come within the scope of the appended claims.

Having described our invention; what we claim as new and desire tosecure by Letters Patent is:

l. A mixing device including a casing hav ing mixing and dischargechambers therein a partition between said chambers provided with aconnecting aperature; an inverted cup-shaped member adapted to rest uponsaid partition, said cup-shaped member being provided with an inwardlyturned hollovv boss; means for retaining said cup shaped member in saidcasing' a mixing l a e n 7 n valve 1n said mixing chamber; an operatingstem extending through said boss and said aperture and being connectedto said valve; and a spring disposed about said stem and .seated in saidboss.

2. A mixing device including a casing provided With mixing and dischargechambers;

said cup-shaped member in said casing; an

operating stem extending through said boss and said packing gland vandbeing connected to said mixing valve; and a spring disposed about saidstem and seated in said hollow boss tol normally retain said valve inin* operative position.

8. A mixing device including a casing having mixing and dischargechambers, there being a shoulder formed on the inner periphery of saidcasing between` said chambers; a partition seated upon said shoulders,said partition being provided with a connecting aperture; a mixing valvein said mix ing chamber; an inverted cup-shaped member adapted to restupon said partition, said cup-shaped member being provided with aninwardly turned hollow boss; means secure-:l

to said casing for holding said cup-shapedv member and said partition inposition; an operating stem extending through said hollow boss and beingConnected with said mixing valve; and a spring disposed about said stemand seated in said hollow boss Ytor normally holding said valve ininoperative position.`

ln testimony whereof, we have signed our names tothis speoilication .inthe presence of two subscribing Witnesses.

LEG F. OFLAHERTY. WlLLlAM L. KIRKPATRICK. Witnesses JOSHUA R1. H.Po'r'rs7 FREDA C. APrLn'roN.

